21414124100 has 36 divisors (see below), whose sum is σ = 46475022804. Its totient is φ = 8564474880.

The previous prime is 21414124093. The next prime is 21414124139. The reversal of 21414124100 is 142141412.

It can be written as a sum of positive squares in 6 ways, for example, as 3418974784 + 17995149316 = 58472^2 + 134146^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1337744 + ... + 1353656.

Almost surely, 2^21414124100 is an apocalyptic number.

21414124100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21414124100 is an abundant number, since it is smaller than the sum of its proper divisors (25060898704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21414124100 is a wasteful number, since it uses less digits than its factorization.

21414124100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29384 (or 29377 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21414124100 its reverse (142141412), we get a palindrome (21556265512).

The spelling of 21414124100 in words is "twenty-one billion, four hundred fourteen million, one hundred twenty-four thousand, one hundred".